US 12,355,959 B2
Image or video coding using deblocking filtering
Hyeongmoon Jang, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Apr. 18, 2024, as Appl. No. 18/638,987.
Application 18/638,987 is a continuation of application No. 17/620,936, granted, now 11,997,265, previously published as PCT/KR2020/007908, filed on Jun. 18, 2020.
Claims priority of provisional application 62/863,252, filed on Jun. 18, 2019.
Prior Publication US 2024/0267517 A1, Aug. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/117 (2014.01); H04N 19/132 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01); H04N 19/80 (2014.01)
CPC H04N 19/117 (2014.11) [H04N 19/132 (2014.11); H04N 19/176 (2014.11); H04N 19/186 (2014.11); H04N 19/80 (2014.11)] 4 Claims
OG exemplary drawing
 
1. An image decoding method performed by a decoding apparatus, comprising:
receiving image information including prediction mode information and residual information from a bitstream;
deriving prediction samples of a current block based on the prediction mode information;
deriving residual samples of the current block based on the residual information;
generating a reconstructed picture based on the prediction samples and the residual samples; and
deriving a modified reconstructed picture by performing deblocking filtering on the reconstructed picture,
wherein the deblocking filtering is performed based on a filter length for a target boundary with respect to the current block in the reconstructed picture,
wherein the filter length is derived based on a distance between the target boundary and a neighboring target boundary adjacent to the target boundary,
wherein for the current block that is a luma component, the filter length is derived based on whether the distance between the target boundary and the neighboring target boundary is i) less than or equal to 4, ii) greater than 4 and less than or equal to 8 or 16, or iii) greater than 16,
wherein for the current block that is a chroma component, the filter length is derived based on whether the distance between the target boundary and the neighboring target boundary is i) less than or equal to 4 or ii) greater than 4.